Drill bit



FIG. 1 is a perspective view of a drill bit design;

FIG. 2 is a top plan view of the drill bit design shown in FIG. 1;

FIG. 3 is a front elevational view of the drill bit design shown in FIG. 1, the rear elevational view, right side elevational view and left side elevational view being identical thereto; and,

FIG. 4 is a bottom plan view of the drill bit design shown in FIG. 1.

The phantom, broken lines shown in the drawings form part of the design that is not claimed herein. 

The ornamental design for a drill bit, as shown and described. 